| 1 | // RUN: %clang_analyze_cc1 -analyzer-checker=optin.osx.OSObjectCStyleCast %s -verify |
| 2 | #include "os_object_base.h" |
| 3 | |
| 4 | struct OSArray : public OSObject { |
| 5 | unsigned getCount(); |
| 6 | }; |
| 7 | |
| 8 | struct A { |
| 9 | int x; |
| 10 | }; |
| 11 | struct B : public A { |
| 12 | unsigned getCount(); |
| 13 | }; |
| 14 | |
| 15 | unsigned warn_on_explicit_downcast(OSObject * obj) { |
| 16 | OSArray *a = (OSArray *) obj; // expected-warning{{C-style cast of OSObject. Use OSDynamicCast instead}} |
| 17 | return a->getCount(); |
| 18 | } |
| 19 | |
| 20 | void no_warn_on_upcast(OSArray *arr) { |
| 21 | OSObject *obj = (OSObject *) arr; |
| 22 | obj->retain(); |
| 23 | obj->release(); |
| 24 | } |
| 25 | |
| 26 | unsigned no_warn_on_dynamic_cast(OSObject *obj) { |
| 27 | OSArray *a = OSDynamicCast(OSArray, obj); |
| 28 | return a->getCount(); |
| 29 | } |
| 30 | |
| 31 | __SIZE_TYPE__ no_warn_on_primitive_conversion(OSArray *arr) { |
| 32 | return (__SIZE_TYPE__) arr; |
| 33 | } |
| 34 | |
| 35 | unsigned no_warn_on_other_type_cast(A *a) { |
| 36 | B *b = (B *) a; |
| 37 | return b->getCount(); |
| 38 | } |
| 39 | |
| 40 | |